filonsvsflousWhich spelling fits?

Quick tell: filons is a verb, flous is an adjective, so they fill different roles in a sentence.

Which to use

“filons” is a verb and “flous” is an adjective - they look or sound alike but fill different roles in a sentence.

#27,812
“filons” frequency rank
#30,613
“flous” frequency rank
58425
confusion score

Side-by-Side Comparison

Feature filons flous
Definition Première personne du pluriel de l’indicatif présent du verbe filer. Masculin pluriel de flou.

Where the eye mixes filons and flous

Muted = shared; highlighted = the visual trap. They share 4 letters in sequence. filons runs 6 letters (CVCVCC) against flous's 5 (CCVVC) - the length gap alone is often enough to separate them once you know to check it.

6 ch
filons
5 ch
flous

Why the eye confuses filons with flous

These two trip readers on the page rather than in the ear: filons is \fi.lɔ̃\ while flous is \flu\. Spoken aloud the problem disappears. In writing it persists, because they differ by 1 letter(s) in length, and the parts of speech differ too (verb vs adjective), which is usually the fastest check. Our composite confusion score for this pair is 58425, derived from the frequency rank of both members and their visual similarity.

filons is recorded at frequency rank #27,812, classified as averb, pronounced \fi.lɔ̃\. flous is at rank #30,613, tagged as anadj, pronounced \flu\.

Glosses for this pair are partially populated in our dataset, but the full side-by-side definitions above should still guide you to the right choice.

With a confusion score of 58425, this pair ranks #109,151 of 440,172 scored French confusable pairs - among the most confusable pairs.

Orthographic DNA of filons vs flous

Shared letters: flos. Private to "filons": in. Private to "flous": u.

"filons" · 6 letters · shape CVCVCC  ·  "flous" · 5 letters · shape CCVVC

Known mistypes of this pair

  • filons ← ffilons · fillons · filnos · filonns · filonss · filosn · fiolns · flions
  • flous ← fflous · fllous · flosu · flouss · fluos · folus · lfous

Frequently Asked Questions

Can "filons" and "flous" be used interchangeably?
No - they are not even the same part of speech. "filons" is a verb and "flous" an adjective, so a sentence built for one is usually ungrammatical with the other.
Which is more common, "filons" or "flous"?
"filons" is the more common of the two: it sits at frequency rank #27,812 in our French list, against #30,613 for "flous". The two are close in frequency, so neither is a safe default; check the meaning rather than guessing.

Useful next steps

Pronunciation already separates them, if the page still looks alike, the dictionary links below settle it.

  • Full dictionary entry for "filons" with definition, IPA, and generated misspellings. Word entry
  • Full dictionary entry for "flous" - compare definitions side by side with the headword page. Word entry
  • This pair ranks #109,151 of 440,172 scored French confusable pairs in this corpus vintage. Corpus statistics
  • "filons" and "flous" also get mixed up with nearby pairs, the highest-scored neighbour is "flour vs flous". Nearby pair
  • Recorded mistypes exist for at least one side of this pair, useful when a spell-checker or OCR lands on the wrong form. See mistypes

Confusion rank #109,151 of 440,172 scored French pairs, corpus vintage 2026-09-03, not spelling advice.

Source: Wiktionary (via kaikki.org) Structured Wiktionary extract

Source: FrequencyWords open word-frequency list